Biology

Reversal

Direct Reversal of Base DamagePerhaps the most frequent cause of point mutations in humans is the spontaneous addition of a methyl group (CH3-) (an example of alkylation) to Cs followed by deamination to a T.

ReversalResemblance between two taxa because one of them has evolved a new character, then lost it again, and the other taxon has never evolved it.Related Terms: Evolution ...

A reversal of the order of syllables in a word, analogous to mirror writing.Please contribute to this project, if you have more information about this term feel free to edit this page ...

monsoon A seasonal reversal of wind patterns caused by the different heating and cooling rates of the oceans and continents.

Sex-role reversal in vertebrates: behavioural and endocrinological accounts. Behav Processes 51(1-3):135-147. PMID 11074317 ^ Barlow GW. (2005). How Do We Decide that a Species is Sex-Role Reversed? The Quarterly Review of Biology 80(1):28-35.

Their reconstructions suggest multiple losses of digits from the manus (hand) with no reversals (as expected), but they found a very different pattern for the pes (foot).

An action potential is a temporary reversal of the electrical potential along the membrane for a few milliseconds. Sodium gates and potassium gates open in the membrane to allow their respective ions to cross.

? Patterns of magnetic reversal can be matched with corresponding patterns elsewhere, allowing rocks to be dated when other methods are not available.Geologists have established a geologic record of Earth's history.

Phalaropes gain weight at Great Salt Lake before heading to their wintering grounds in South America. Interestingly, Phalaropes exhibit a sort of sexual role reversal.

describe an ecosystem in which the climax community is held at a "lower" level due to repeated‚ unpredictable events (for example‚ maintenance of a prairie area by periodic fires which kill invading trees) (dis = separation‚ negation‚ reversal) ...